Top 12 databases used in included reviews in descending order (N=197 reviews)
| Database name | Frequency, per cent |
|---|---|
| MEDLINE | 162, 82.2% |
| EMBASE | 160, 81.2% |
| Cochrane | 148, 75.1% |
| CINAHL | 87, 44.2% |
| PubMed | 58, 29.4% |
| Web of Science | 56, 28.4% |
| PsycINFO | 49, 24.9% |
| SCOPUS | 29, 14.7% |
| AMED | 30, 15.2% |
| LILACS | 24, 12.2% |
| Google Scholar | 13, 6.6% |
| ProQuest | 12, 6.1% |
AMED, Allied and Complementary Medicine Database; CINAHL, Cumulative Index to Nursing and Allied Health Literature; LILACS, Literatura Latina-Americana e do Caribe em Ciêcias da Saúde.